22454020 has 12 divisors (see below), whose sum is σ = 47153484. Its totient is φ = 8981600.

The previous prime is 22454011. The next prime is 22454021. The reversal of 22454020 is 2045422.

It can be written as a sum of positive squares in 2 ways, for example, as 7150276 + 15303744 = 2674^2 + 3912^2 .

It is not an unprimeable number, because it can be changed into a prime (22454021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561331 + ... + 561370.

It is an arithmetic number, because the mean of its divisors is an integer number (3929457).

Almost surely, 2^22454020 is an apocalyptic number.

22454020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22454020 is an abundant number, since it is smaller than the sum of its proper divisors (24699464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22454020 is a wasteful number, since it uses less digits than its factorization.

22454020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122710 (or 1122708 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 22454020 is about 4738.5672940246. The cubic root of 22454020 is about 282.1183715789.

Adding to 22454020 its reverse (2045422), we get a palindrome (24499442).

The spelling of 22454020 in words is "twenty-two million, four hundred fifty-four thousand, twenty".